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Geotechnical Engineering Expert Witnesses

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Julian M. Toneatto, PhD, PE, PP
President
PO Box 133
Lafayette Hill PA 19444
USA
phone: 609-502-0900
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Julian M. Toneatto, PhD, PE, PP, has over 40 years of experience in Civil, Structural, and Environmental Engineering Consulting.

Dr. Toneatto has a Doctorate in Structures and Dynamics and MBA in Finance. His former employers include the Department of Defense, U.S. Army Corps of Engineers, States, Municipalities, DOT, private and public firms, and the EXXON Corporation.

Dr. Toneatto served as a Professor of Civil Engineering and Course Director at the Department of Civil Engineering, U.S. Military Academy. He structured, revised, and taught courses in Advanced Structural Analysis, the Honors Course in Structural Analysis and Steel Design, and authored and taught Soil Mechanics. Dr. Toneatto has also served on the faculty at USMA (West Point): Department of Civil and Mechanical Engineering, Philadelphia University and The US Army Engineer School at Fort Leonard Wood, MO.

Litigation Support - Dr. Toneatto has been offering his expert witness services to the legal industry for decades. A Forensic Engineer, he provides expert reports, depositions, and court testimony in support of litigation.

Areas of Expertise:
  • Forensic Engineering
  • Civil Engineering
  • Structural Engineering
  • Environmental Engineering
  • Materials Engineering
  • Safety Engineering
  • Failure Analysis
  • Geotechnical Engineering
  • Construction Damages
  • Petroleum Engineering
  • Corrosion
  • Land Use and Zoning
  • Occupational Health / Environmental Health
  • Product Liability - Consumer Safety
  • View Dr. Toneatto's Consulting Profile.
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    David Wilshaw, MS, PG
    President
    P.O. Box 783547
    Winter Garden FL 34778
    USA
    phone: 407-342-7737
    David Wilshaw, MS, PG has over 33 years of experience in Engineering Geology, Geotechnics, Hydrogeology and Geoenvironmental assessments. Established in 2012, his company Britannia Solutions LLC has continuously provided Sinkhole Neutral Evaluation and expert geological opinions to insurance carriers, private individuals, corporations and their respective legal advisers. Mr. Wilshaw offers services as a professional geologist and expert witness with respect to disputed sinkhole insurance claims and many other specialized areas of engineering geology, specifically Slope Failures, Underground Mining Subsidence and the Adequacy of Ground Investigations in relation to claims under construction contracts.

    David Wilshaw has been a Florida DFS-certified Neutral Evaluator under §627.7074 Florida Statutes since 2011. He is licensed as a Professional Geologist in Florida, Pennsylvania and Tennessee and is registered as a Chartered Geologist and Fellow of the Geological Society in the United Kingdom. He has been Adjunct Professor of Earth Science since 2015. In the last 8 years, he has been the statutory Professional Geologist under s.627.707 Florida Statutes for over 850 cause of subsidence investigations related to sinkhole loss claims across Florida, from the Panhandle to the Florida Keys.

    Litigation Services Include:
    • Testifying Expert at Deposition over 120 times.
    • Testifying Expert at Trial over 30 times.
    • Neutral Evaluation of over 135 Disputed Sinkhole Insurance Claims in accordance with Section 627.7074 Florida Statutes
    • Peer review and expert opinion to defense and plaintiff attorneys on over 2,000 disputed claims for sinkhole loss
    View Consulting Profile.
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    James A. Jacobs, PG, CHG, CPG
    229 Tewksbury Ave.
    Point Richmond California 94801
    USA
    phone: 510-590-1098
    fax: 510-232-2823
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    James A. Jacobs, PG, CHG, CPG, has over 30 years of experience as a Geologist / Hydrogeologist and licensed contractor focused on answering geologic, environmental impairment, and forensic questions. He is a certified hydrogeologist in California and Washington and a Professional Geologist in California and several other states.

    A Fulbright Senior Scholar with 4 awards in environmental engineering and science, his projects relate to collecting, describing, and analyzing Soil, Rock, Groundwater, Vapor, and Stormwater samples, summarizing the data and creating useful technical information and cost recovery statements for decision makers or settlements. His other projects relate to peer review and contractor evaluation projects.

    Mr. Jacobs has provided litigation services in the investigation and analysis of cases involving contamination by hydrocarbon and solvent spills and leaks, erosion, flooding, and related issues. He has provided testimony assisting with many settlement conferences. Mr. Jacobs is qualified to testify in municipal, state, and Federal courts.

    Litigation Support and Expert Witness:
    • Perform litigation and technical support for various environmental and engineering cases from evaluating remediation history to well damage to erosion control
    • Estimate reasonable and necessary remedial costs for settlement conferences
    • Serve as an objective peer reviewer
    • Expert witness testimony on environmental cases
    Since 2002, Mr. Jacobs has been an elected director of two public agencies, a local sewer district, and a community services district. As such he is interested in I&I issues and sewer gas and volatile contaminant vapor intrusion into indoor air spaces via ineffective vapor seals on fixtures or dry P-traps in buildings. He performs cost allocations for environmental litigation, and also provides oil and gas production verification.

    View James Jacobs' Consulting Profile.
    James A. Jacobs, et. al (eds.)
    Put together by a team of scientists, engineers, regulators, and lawyers, the Chromium(VI) Handbook consolidates the latest literature on this topic. The broad scope of this book fills the need for a comprehensive resource on chromium(VI), improving the knowledge of this contaminant at a time when the extent and degree of the problem is still being assessed. It addresses naturally occurring and anthropogenic sources, geology and geochemistry, toxicity, treatment, regulatory issues and legal cases, and recommendations.
    James A. Jacobs, et al
    Provides the tools needed to analyze and solve acid drainage problem. Featuring contributions from leading experts in science and engineering, this book explores the complex biogeochemistry of acid mine drainage, rock drainage, and acid sulfate soils. It describes how to predict, prevent, and remediate the environmental impact of acid drainage and the oxidation of sulfides, offering the latest sampling and analytical methods. Moreover, readers will discover new approaches for recovering valuable resources from acid mine drainage, including bioleaching.
    James A. Jacobs, et al
    The definitive guide to petroleum hydrocarbon fuel spill and leak causes, prevention, response, and cost recovery.It highlights the complex nature of petroleum hydrocarbon fuel extraction methods, the unintended consequences when disasters occur, spill behavior, and environmental impact mitigation. This practical resource discusses engineering techniques; long-term biological and environmental effects; dealing with insurance claims, litigation, and legislation in overlapping jurisdictions; and much more.
    James A. Jacobs, et. al (eds.)
    Written by an expert team of scientists, engineers, and toxicologists, MTBE: Effects on Soil and Ground-Water Resources provides complete in-depth coverage of the assessment and potential remediation strategies of methyl tertiary-butyl ether (MTBE).
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    Heather Suttle
    Marketing Manager
    8811 FM 1960 Bypass Road West
    Suite 400
    Humble TX 77338
    USA
    phone: 281-358-4441
    fax: 281-358-2517
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    David AmoriDavid P. Amori, PE, RRC, Vice President of Engineering at EFI Global, is a Structural / Geotechnical Engineer and Registered Roof Consultant with more than 22 years of domestic and international experience in building and heavy civil construction and engineering. His responsibilities include the oversight of the engineering service line, product delivery, quality, training and mentoring, business development, and executive team liaison.

    Mr. Amori's background includes geotechnical engineering, construction materials testing, and domestic and international construction management of commercial and heavy civil projects. He has performed hundreds of forensic investigations in North and South America.

    David Amori is a registered professional engineer in the states of Colorado, Louisiana, New York, Oklahoma and Texas. He holds a Bachelors of Science in Civil Engineering from the University of Colorado, and a Masters of Science in Construction Management from the University of Birmingham.

    Mr. Amori provides Litigation Support services to attorneys for both Plaintiff and Defense. He has been retained numerous times and is court qualified as a structural and geotechnical engineer.

    Areas of Expertise:
    • Structural Assessment
    • Construction Defect Investigation
    • Foundation Evaluation
    • Structural Fire Damage Assessment
    • Roof and Building Envelope Assessments
    Representative Litigation Support
    • Pearland, TX - Design team defendant expert in a case involving the code compliance, structural integrity, and functional performance of roof of a newly constructed assisted living facility
    • San Antonio, TX - Expert investigating the performance of window systems, roof systems, and exterior wall finishes
    • Austin, TX - Expert investigating the performance of custom window systems
    View David Amori's Consulting Profile.
    10/12/2017 · Construction
    The forensic engineering assignment typically has a scope of work that begins with something to the effect of "determine the cause of the observed damage to the..." Often this includes an inspection and analysis to determine if the observed damage is related to a particular event. For example, an assignment might ask a forensics professional to determine if the hailstorm on June 1 caused functional hail-related damage to a roof. Or, it might ask to delineate the structural fire-related damage.

    9/14/2017 · Construction
    When a catastrophe hits, unmanned aerial systems (UASs, also called "drones") can quickly and effectively provide a bird’s-eye view of inaccessible and unsafe areas as well as major losses. Such visual access can drastically change the life of the insurance claim, making drone use a rapidly expanding data-collection method.

    8/15/2017 · Construction
    So far this year, the topic of wildfires has gained national attention across the U.S. In May, the Springs Fire in California threatened 4,000 homes and destroyed 24,250 acres. In June, the record-breaking Black Forest Fire in Colorado destroyed 14,280 acres and about 500 homes and caused an estimated $85 million in damages. The devastation from the unprecedented Rim Fire that burned in and around Yosemite National Park in August and September is still being calculated, but it already ranks as one of the worst wildfires in history.

    7/31/2017 · Failure Analysis
    According to the Insurance Institute for Business & Home Safety (IBHS), plumbing supply failures are the leading source of residential water losses-almost 50 percent greater than the second-leading source. Many of these are caused by broken pipes that result from water that gets trapped inside them and freezes.

    6/26/2017 · Construction
    Every spring and throughout the summer, much of the U.S. is subjected to thunderstorms that produce damaging hail. Property damage can manifest in several forms: broken windows, damaged roof top equipment, and roof damage. With a residential roof replacement starting at several thousand dollars and a commercial roof at tens of thousands, functional roof damage is probably the largest expense exposure for most buildings.

    3/2/2016 · Construction
    For the forensic investigator, damage assessments require taking a global look at the loss to determine all causes, including possible design and construction deficiencies.

    2/9/2016 · Construction
    Large losses present a unique set of challenges from the perspective of managing an expert or team of experts. For the purposes of this column, let's assume that a large loss is one that exceeds $250,000. These might include heavy civil construction, infrastructure, transportation, or a catastrophic event affecting a large building.

    2/17/2015 · Construction
    Roof collapses can be sudden, catastrophic events caused by a particular loading condition or combination of loads. Roof collapses often happen with little or no warning, making this a particularly dangerous event. When investigating a roof collapse, the obvious perpetrators are examined: how much snow was on the roof, were the drains plugged up, were the winds in excess of the design wind speed and many others. Occasionally, the roof can be doomed to collapse months or years before an event due to design or construction related deficiencies allowing for a subrogation opportunity to recover cost of repairs.

    12/9/2014 · Construction
    Often after an event like a tornado, windstorm, water surge, or fire, the damage sustained to some property structures exceeds the value of it. In these cases, an engineer might be asked to determine if the remaining foundation system is suitable for reconstruction. The motivation for this is fairly straightforward: the property may have been underinsured and saving the foundation represents an effort to reduce the reconstruction cost, or there is a desire to get the structure rebuilt as quickly as possible. In the interest of time and money, an evaluation of the suitability of the foundation for reuse can be performed. There are three main questions for the engineer to answer: Is the slab damaged by the event? Are there any other factors, such as differential foundation movement, that would prevent the slab being reutilized? Are there any code considerations that prevent the slab from being reutilized?

    8/8/2014 · Construction
    In the wake of a Hurricane the monumental task of beginning to assess the losses and respond to the thousands of claims inevitably includes a number of claims concerning the functional assessment of commercial roofing systems. The design and construction of a roof system requires input from several disciplines including thermal considerations (Mechanical), fire resistance (Architect/Municipality), equipment carrying capacity (Structural), ability to drain and/or to store water (Architect/Civil), aesthetics, and the ability to resist any number of transient loads (Structural). The assessment of the damage sustained by a roof system during a storm event is an equally broad endeavor requiring the expert to call on a number of disciplines.

    3/20/2014 · Construction
    Building envelope assessments for storm-related damage is a normal part of job for the property adjuster and forensic consultant. The assessment of storm-related damage inevitably becomes a question of whether the observed condition pre-dates the storm or is the result of sudden and recent event. In fact, the question may very well be, "Did the observed condition exist during or even before the building was constructed; is the condition the result of a construction or design related defect?"

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    Design, Analysis, Expert, Trial, Forensic Witness
    Counties of Westchester, Rockland, Queens, Putnam
    Dutchess, Orange, Ulster, Nassau, Suffolk, Bronx, Statin Island
    Richmond & Brooklyn / Kings County Long Island / NY City / Manhattan / White Plains
    Shrub Oak NY 10588
    USA
    phone: 914-245-6320
    fax: 914-245-6335
    Vincent A. Ettari, P.E., P.C. specializes in many fields of Civil, Structural, Site, Coastal, Safety & Environmental Engineering, including the Design & Analysis of:

  • Structures, Buildings, Houses, Dwellings
  • Foundations, Footings, Elevators, Retaining Walls, Dams
  • Development Plan & Plats for Sites, Properties, and Residences
  • Underground & Subsurface Chamber / Chambers
  • Scaffold, Scaffolds, Scaffolding
  • Site Plans & Subdivisions: Industrial, Commercial, Residential
  • Roads, Roadways, Ramps, Walks, & Man Hole Cover / Covers
  • Sidewalks, Walkways, Paths & Pathways
  • Lighting: Lamps, Lights, Lamp Poles, Light Levels
  • Luminaries & Illumination (Specifications)
  • Rock Cuts & Blasting (Topography, Specification)
  • Soil Slopes / Samples / Mechanics / Geotechnical Engineers
  • Sanitary Facilities, Septic Systems (Board of Health Septics Approval)
  • BOHA / DEP Approvals
  • Water, Drains, Drainage, Sewer & Sewage Lines & Mains
  • Culvert / Culverts, Manholes (Man Holes) & Catchbasins / Catch Basins
  • Inspection, Supervision, and Certification of Construction
  • House Inspector & Inspections
  • Road, Roadway, Walk & Sidewalk Premises Liability (e.g., Steep Slope)
  • Walkway, Path, Ramp & Pathway Premise Liability (e.g., Steep Grade)
  • Coefficient of Friction / Slip & Fall (Snowy & Icy Conditions)
  • Vertical Discontinuity / Discontinuities / Trip & Falls
  • Small Ports / Port, Marinas / Marina, Marine Dredging
  • Levees, Jetties, Dolphins, Piers, Sea & Flood Walls
  • Wharves, Breakwaters, Bulkheads, Weirs, & Revetments
  • Groins, Dikes and Waterfront Structures
  • Drainage Basin Analysis, Rainfall, Floods & Flood Plain / Plains
  • Flooding Controls & Control Devices
  • Storm Water Runoff (10, 25, 50 & 100 Year Storms)
  • Pressure & Pressures: Wind, Wave / Waves, Ice, Snow
  • Rain Fall Run Off & Storm Water Pollution Treatment
  • Excavation, Grading, Fills & Filling Operations (Swales, Berms, Silt Fence)
  • Erosion Control, Sediment Barriers, Sedimentation / Catch Basins (Hay Bales)
  • Pumps and Pump System Line & Main
  • Slope, Dam, Levee, Jetty, Dolphin, Pier, Wharf & Breakwater Collapse
  • Bulkhead, Weir, Revetment, Groin, Dike, Footing & Foundation Failures
  • Failure of Fire Containment Wall, Elevator or Water Front Structure
  • Tenement House Façade Collapses
  • Code History of Existing Multiple / Multi-Family Dwelling / Building
  • Application of Municipal Building, Fire & Property Maintenance Codes
  • City, Town & Village Zoning, Planning, Steep Slopes & Grades, Wetland & Wetlands Ordinances
  • Testimony at Board Meetings as a Design Forensics Engineer
  • 3/23/2009 · Engineering
    In many places of NYS, public water supply systems are available. If your site is situated in such a location, then the lots which will result from your contemplated subdivision will be required to draw their water supply from the municipal water system

    3/5/2009 · Construction
    As you enter into a contract to buy a piece of commercial or industrial property, you should always keep in mind that your new town and county have rules which you must abide by. With regard to the exterior areas of your premises, there are rules concerning your septic system, the maintenance of your building, the addition onto your structure, etc

    12/28/2006 · Construction
    In developing a vacant piece of land, steep slopes are often an issue. And, the more prevalent the steep slopes are on a site, the greater the likelihood that retaining walls will be part of the Approved Site Plan. Let us consider three municipalities which regulate the final allowable slopes for land which is filled, cut, or graded

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    Rudolph P. Frizzi, PE, GE, D.GE
    Geotechnical Engineering Consultant
    555 Montgomery Street, Suite 1300
    San Francisco CA USA
    phone: 201-398-4613
    Rudolph-Frizzi-Geotechnical-Engineering-Expert-Photo.jpg
    Rudolph P. Frizzi, PE, GE, D.GE is a Civil Engineer with over 25 years of extensive practical Foundation and Geotechnical Engineering experience. Mr. Frizzi has extensive project management experience throughout the United States and internationally, with particular emphasis on:
    • Foundation Design and Construction in Urban Areas
    • Large Scale Land and Waterfront Public and Private Development Projects
    Mr. Frizzi has obtained extensive field, office supervision, and project management experience including soil and rock sampling and in-situ testing; monitoring pre , during, and post-construction with state-of-the-art geotechnical instrumentation; nondestructive testing; aqueous and sub-aqueous inspections and investigations; and heavy construction which has contributed to his practical approach to geotechnical problem solving.

    In addition to his "engineer of record" experience, Mr. Frizzi has provided expert geotechnical consultation and trial testimony on over 50 excavation and foundation litigation cases throughout the United States and internationally. His services are available to attorneys for Plaintiff and Defense.

    Areas of Forensic Expertise:
    • Foundations for Stadiums, Arenas, High-Rise Structures in Urban Areas
    • Embankment and Dam Stability
    • Large-scale Land and Waterfront / Marine Structures and Development
    • Shallow and Deep Foundation Systems
    • Soft and Hard Rock Treatment
    • Earthwork
    • Ground Improvement of Waste Fills
    • Temporary and Permanent Lateral Support Systems for Deep Excavations
    • Geotechnical Instrumentation and Vibration Monitoring
    • Construction Dewatering
    View Rudolph Frizzi's Consulting Profile.
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    Sean Wilson, MS, PG, CEG
    664 W. Broadway
    Glendale CA 91204
    USA
    phone: (818) 539-8408
    fax: (818) 543-4565
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    Sean Wilson, MS, PG, CEG, has over 23 years of experience in performing Geologic and Geotechnical Forensic Engineering investigations. Mr. Wilson currently serves as a Senior Professional Geologist at Shannon & Wilson, Inc. He holds a professional engineering geologist license in California and a professional geologist license in Utah.

    Mr. Wilson has broad experience in numerous industries. He has completed or project managed over a 1,000 forensic evaluations of distressed properties in California, Utah and Oregon for insurance carriers. For the construction industry, Mr. Wilson's work in residential/commercial/public works development projects include trench and drilling exploration, down-hole logging, geotechnical laboratory testing, slope stability analysis, fault trench logging, foundation and keyway observations, fill control, mass grading monitoring. He has also provided planning and environmental impact reports for several cities and counties throughout California.

    Litigation Support - Mr. Wilson provides consultation services to attorneys, judges, arbitrators, insurance companies, and others in the evaluation and remediation of soil related distress to structures, earth movement, seismicity, and other matters related to adverse soil, geologic, or hydrologic conditions. His services are available to counsel representing both Plaintiff and Defendant.

    Areas of Expertise:
    • Forensic Investigations
    • Damage Causation Evaluations
    • Geologic and Geotechnical Investigations
    • Landslide Investigations and Mitigation
    • Geologic Hazard Assessments
    • Environmental Impact Report (EIR) Preparation
    • Environmental Planning
    • Observation and Monitoring of Engineered Grading and Construction Projects